Lillian,
Alice made some good points above re how easily they are accessible to folks in your area. Also having named varieties vs. NOIDs will typically allow you to charge more. Florida Colors is a well known nursery that's been in business for some time.
https://www.floridacolorsplume... this will show you what they price theirs at. Do note like most items, folks will not pay near the same amount at a yard sale/church sale locally as they would from a registered nursery.
Good luck with your pretties!!!